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Effect of organic loading on the performance of aerated submerged fixed-film 85 reactor (ASFFR) for crude oil-containing wastewater treatment

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Author(s): H. Izanloo, A. R. Mesdaghinia, R. Nabizadeh, S. Nasseri, K. Naddafi, A. H. Mahvi, Sh. Nazmara

Journal: Iranian Journal of Environmental Health Science & Engineering
ISSN 1735-1979

Volume: 3;
Issue: 2;
Start page: 85;
Date: 2006;
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Keywords: Aerated submerged fixed-film (ASFFR) bioreactor | SCOD removal | attached growth | organic loading rate | oily wastewater | discharge standards

ABSTRACT
An aerated submerged fixed-film (ASFF) bioreactor was developed to treat an artificial wastewater based on crude oil. Bee-Cell 2000 was used as support media having porosity of 87% and a specific surface area of 650 m2/m3. The system was able to achieve 83.14–97.05 percentage removal efficiencies of soluble chemical oxygen demand (SCOD) in the organic loading rate range of 0.84 to 9.41 g SCOD/m2.day. Results showed that the effluent SCOD concentration ranged between 18.93 and 100.93 mg/L at organic loadings experienced. Therefore, an ASFF process showed that it was feasible to treat high oily wastewater in order to meet the discharge standards.
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